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freeze move operand sites prior to calling the assembler so the assembler won't steal them

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This commit is contained in:
Joel Dice 2009-03-13 20:55:41 -06:00
parent 21fa23d84b
commit ee2d105f6c
1 changed files with 21 additions and 4 deletions
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25
src/compiler.cpp
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@ -1698,6 +1698,8 @@ move(Context* c, Value* value, Site* src, Site* dst)
Site* tmp = freeRegisterSite(c);
addSite(c, value, tmp);
tmp->freeze(c, value);
if (DebugMoves) {
char srcb[256]; src->toString(c, srcb, 256);
char tmpb[256]; tmp->toString(c, tmpb, 256);
@ -1706,6 +1708,7 @@ move(Context* c, Value* value, Site* src, Site* dst)
apply(c, Move, BytesPerWord, src, 0, BytesPerWord, tmp, 0);
tmp->thaw(c, value);
dst->thaw(c, value);
src->thaw(c, value);
@ -1719,9 +1722,11 @@ move(Context* c, Value* value, Site* src, Site* dst)
}
src->freeze(c, value);
dst->freeze(c, value);
apply(c, Move, BytesPerWord, src, 0, BytesPerWord, dst, 0);
dst->thaw(c, value);
src->thaw(c, value);
}
@ -2469,6 +2474,8 @@ maybeMove(Context* c, BinaryOperation type, unsigned srcSize,
+= (srcSize - srcSelectSize);
}
target->freeze(c, dst);
if (target->match(c, dstMask) and not useTemporary) {
if (DebugMoves) {
char srcb[256]; src->source->toString(c, srcb, 256);
@ -2483,8 +2490,6 @@ maybeMove(Context* c, BinaryOperation type, unsigned srcSize,
src->source->thaw(c, src);
} else {
target->freeze(c, dst);
// pick a temporary register which is valid as both a
// destination and a source for the moves we need to perform:
@ -2507,6 +2512,8 @@ maybeMove(Context* c, BinaryOperation type, unsigned srcSize,
addSite(c, dst, tmpTarget);
tmpTarget->freeze(c, dst);
if (DebugMoves) {
char srcb[256]; src->source->toString(c, srcb, 256);
char dstb[256]; tmpTarget->toString(c, dstb, 256);
@ -2516,6 +2523,8 @@ maybeMove(Context* c, BinaryOperation type, unsigned srcSize,
apply(c, type, srcSelectSize, src->source, 0, dstSize, tmpTarget, 0);
tmpTarget->thaw(c, dst);
src->source->thaw(c, src);
if (useTemporary or isStore) {
@ -2538,10 +2547,10 @@ maybeMove(Context* c, BinaryOperation type, unsigned srcSize,
} else {
removeSite(c, dst, target);
}
target->thaw(c, dst);
}
target->thaw(c, dst);
if (addOffset) {
static_cast<MemorySite*>(src->source)->offset
-= (srcSize - srcSelectSize);
@ -2652,6 +2661,8 @@ class MoveEvent: public Event {
src->source->freeze(c, src);
addSite(c, dst, low);
low->freeze(c, dst);
if (DebugMoves) {
char srcb[256]; src->source->toString(c, srcb, 256);
@ -2662,6 +2673,8 @@ class MoveEvent: public Event {
apply(c, Move, BytesPerWord, src->source, 0, BytesPerWord, low, 0);
low->thaw(c, dst);
src->source->thaw(c, src);
assert(c, dstHighMask.typeMask & (1 << RegisterOperand));
@ -2671,6 +2684,8 @@ class MoveEvent: public Event {
low->freeze(c, dst);
addSite(c, dst->high, high);
high->freeze(c, dst->high);
if (DebugMoves) {
char srcb[256]; low->toString(c, srcb, 256);
@ -2681,6 +2696,8 @@ class MoveEvent: public Event {
apply(c, Move, BytesPerWord, low, 0, dstSize, low, high);
high->thaw(c, dst->high);
low->thaw(c, dst);
} else {
maybeMove(c, Move, BytesPerWord, BytesPerWord, src, BytesPerWord, dst,